1. In earlier writings,
Chisholm had toyed with the idea that each person might be a tiny
material object. See, for example, Chisholm 1978.

2. An even more liberal
metaphysician might want to add further categories such as (9) points,
lines, boundaries, and other such geometrical entities; (10) numbers;
(11) ideas; (12) possible worlds; (13) sense data. Chisholm discussed
many of these suggestions in his later works in ontology. He had
rejected sense data in favor of the adverbial theory of perception
early in his career, though later he abandoned the adverbial
theory. He also proposed to explain away sets by appeal to
attributes.

3. See Kim 1979,
148. Indeed, you might even accept a gift or a prize.

4. This is a simplified
paraphrase of Chisholm’s actual definition, which appears at
[P&O], 128.

5. Some of the intermediate
names would be pretty hard to pronounce. Consider, for example,
‘Ndam’ and ‘Aoah’.